thp: add x86 32bit support

Add support for transparent hugepages to x86 32bit.

Share the same VM_ bitflag for VM_MAPPED_COPY.  mm/nommu.c will never
support transparent hugepages.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 109 deletions

diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index b2df039a4119..975f709e09ae 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -182,115 +182,6 @@ extern void cleanup_highmap(void);
 
 #define __HAVE_ARCH_PTE_SAME
 
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-static inline int pmd_trans_splitting(pmd_t pmd)
-{
-	return pmd_val(pmd) & _PAGE_SPLITTING;
-}
-
-static inline int pmd_trans_huge(pmd_t pmd)
-{
-	return pmd_val(pmd) & _PAGE_PSE;
-}
-#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-
-#define mk_pmd(page, pgprot)   pfn_pmd(page_to_pfn(page), (pgprot))
-
-#define  __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
-extern int pmdp_set_access_flags(struct vm_area_struct *vma,
-				 unsigned long address, pmd_t *pmdp,
-				 pmd_t entry, int dirty);
-
-#define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG
-extern int pmdp_test_and_clear_young(struct vm_area_struct *vma,
-				     unsigned long addr, pmd_t *pmdp);
-
-#define __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
-extern int pmdp_clear_flush_young(struct vm_area_struct *vma,
-				  unsigned long address, pmd_t *pmdp);
-
-
-#define __HAVE_ARCH_PMDP_SPLITTING_FLUSH
-extern void pmdp_splitting_flush(struct vm_area_struct *vma,
-				 unsigned long addr, pmd_t *pmdp);
-
-#define __HAVE_ARCH_PMD_WRITE
-static inline int pmd_write(pmd_t pmd)
-{
-	return pmd_flags(pmd) & _PAGE_RW;
-}
-
-#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
-static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm, unsigned long addr,
-				       pmd_t *pmdp)
-{
-	pmd_t pmd = native_pmdp_get_and_clear(pmdp);
-	pmd_update(mm, addr, pmdp);
-	return pmd;
-}
-
-#define __HAVE_ARCH_PMDP_SET_WRPROTECT
-static inline void pmdp_set_wrprotect(struct mm_struct *mm,
-				      unsigned long addr, pmd_t *pmdp)
-{
-	clear_bit(_PAGE_BIT_RW, (unsigned long *)&pmdp->pmd);
-	pmd_update(mm, addr, pmdp);
-}
-
-static inline int pmd_young(pmd_t pmd)
-{
-	return pmd_flags(pmd) & _PAGE_ACCESSED;
-}
-
-static inline pmd_t pmd_set_flags(pmd_t pmd, pmdval_t set)
-{
-	pmdval_t v = native_pmd_val(pmd);
-
-	return native_make_pmd(v | set);
-}
-
-static inline pmd_t pmd_clear_flags(pmd_t pmd, pmdval_t clear)
-{
-	pmdval_t v = native_pmd_val(pmd);
-
-	return native_make_pmd(v & ~clear);
-}
-
-static inline pmd_t pmd_mkold(pmd_t pmd)
-{
-	return pmd_clear_flags(pmd, _PAGE_ACCESSED);
-}
-
-static inline pmd_t pmd_wrprotect(pmd_t pmd)
-{
-	return pmd_clear_flags(pmd, _PAGE_RW);
-}
-
-static inline pmd_t pmd_mkdirty(pmd_t pmd)
-{
-	return pmd_set_flags(pmd, _PAGE_DIRTY);
-}
-
-static inline pmd_t pmd_mkhuge(pmd_t pmd)
-{
-	return pmd_set_flags(pmd, _PAGE_PSE);
-}
-
-static inline pmd_t pmd_mkyoung(pmd_t pmd)
-{
-	return pmd_set_flags(pmd, _PAGE_ACCESSED);
-}
-
-static inline pmd_t pmd_mkwrite(pmd_t pmd)
-{
-	return pmd_set_flags(pmd, _PAGE_RW);
-}
-
-static inline pmd_t pmd_mknotpresent(pmd_t pmd)
-{
-	return pmd_clear_flags(pmd, _PAGE_PRESENT);
-}
-
 #endif /* !__ASSEMBLY__ */
 
 #endif /* _ASM_X86_PGTABLE_64_H */